#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// Ofast, O0, O1, O2, O3, unroll-loops, fast-math, trapv
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
#define Mp make_pair
#define sep ' '
#define endl '\n'
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define kill(res) cout << res << '\n', exit(0);
#define set_dec(x) cout << fixed << setprecision(x);
#define fast_io ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io freopen("input.txt", "r", stdin) ; freopen("output.txt", "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll N = 1e5 + 50;
const ll Mod = 1e9 + 7;
ll n, t[N];
int main(){
fast_io;
cin >> n;
ll res = 0, mx = 0;
for(int i = 1; i <= n; i++){
cin >> t[i];
res += t[i]; mx = max(mx, t[i]);
}
res -= mx;
int u, v;
for(int i = 1; i < n; i++){
cin >> u >> v;
res += max(t[u], t[v]);
}
cout << res;
}
